There seems to be issues with the EAR2 C6D6 T histograms. For Au the earlier run seems to be shifted for detector 2 compared to the rest. 

For Si plotted is 3 different runs 216123, 216128 and 216135 for both detectors. The histogram is messy but highlights that there is a problem. The single Si resonace should be around 20 000ns and this is only the case for run216128. 

Apologies for no legend on plots. 

Au22
det1 run216158 black
det1 run216109 red
det2 run216158 green
det2 run216109 blue

Au22
det1 run216157 black
det1 run216108 red
det2 run216157 green
det2 run216108 blue